SIMPLE INTEREST

SIMPLE INTEREST

1. S.I = PTR/100 P -----> Principal T -----> Time (in yrs) R -----> Rate % per anum 2. Amount = P+S.I 3.TO find the rate of interest per annum when a sum double/triple etc itself in x    years.Then, [R * T = 100 * (n-1)] 4. [(R1*T1)/R2*T2) = (N1-1)/(N2-1)] 5. [(A/S.I = (100/R*T)+1] 6. [R(or)T = Ö(100*S.I)/P] 7. [(R1-R2) = (More interest * 100/(P*t))] 8. A=[(P+S.I) = P(1+(T.R/100))] 9. [P=(A1*T2-A2*T1)/T2-T1] A ---> Amount T ---> Time 10. R=[(A2-A1)/(A1*T2-A2*T1)] * 100 11. [I = ATR/(100+TR)] 12.If    I1= I2, [(P1/P2) = (T2.R2)/T1.R1] 13. [P = (100/Id)/(Rd.T)] 14. [T = (100.Id/Pd.R)] 15. [T = (100.Id/P R.d)] 16. [R = (100.Is/Td.P)] 17. [Gain = P.Rd.T/100] 18. [R = (100.ITotal)/(P1.T1+P2.T2+P3.T3)........] 19. [P=(100.ITotal/(R1.T1+R2.T2+R3.T3+......)] 20. a[ [100/100] + [(100+R)/100] + (100+2R)/100] + .......] = 0 a ---> Annual instalment. D ---> Amount due 21. A = P * [ (100+R1+R2+R3)/100]